Call-Info Header Forwarding

Discussion in '3CX Phone System - General' started by dweidig, Mar 18, 2008.

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  1. dweidig

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    I'm trying to create a paging application for paging to LinkSys SPA941 phones. The SPA941 uses ";answer-after=0" in the Call-Info header on the Invite to auto-answer for paging applications. However, it appears that 3CX is not forwarding the Call-Info header to the destination. According to RFC 3261, the Call-Info header should not be deleted by the proxy.

    Are there any reasons that the Call-Info header would not be forwarded?

    I've included a example 3CX logs from the LinkSys SPA941 paging to an application:

    23:27:56.061|.\CallLeg.cpp(110)|Log5||CallLeg::eek:nNewCall:[CM500002]: Info on incoming INVITE:
    INVITE sip:102@192.168.2.124 SIP/2.0
    Via: SIP/2.0/UDP 192.168.2.125:5060;branch=z9hG4bK-37149fca
    Max-Forwards: 70
    Contact: "200"<sip:200@192.168.2.125:5060>
    To: "102"<sip:102@192.168.2.124>
    From: "200"<sip:200@192.168.2.124>;tag=9af5898bff92863eo0
    Call-ID: bfaf414f-732c914a@192.168.2.125
    CSeq: 102 INVITE
    Expires: 240
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
    Call-Info: <sip:192.168.2.124>;answer-after=0
    Proxy-Authorization: Digest username="200",realm="3CXPhoneSystem",nonce="12850288075:6da63242ae70baff2530164037428ac4",uri="sip:102@192.168.2.124",algorithm=MD5,response="fca0404742094a6addae68ccbf963c71"
    User-Agent: Sipura/SPA941-4.1.8
    Content-Length: 0

    23:27:56.130|DialogUsageManager.cxx(800)|Debug8|Resip|::ResipLogger:SEND: INVITE sip:102@192.168.2.110:5070;rinstance=e73afb29d9474a38 SIP/2.0
    Via: SIP/2.0/ ;branch=z9hG4bK-d87543-ba4cfe01055b6e2a-1--d87543-;rport
    Max-Forwards: 70
    Contact: <sip:200@192.168.2.124:5060>
    To: <sip:102@192.168.2.124:5060>
    From: "200"<sip:200@192.168.2.124>;tag=e81e9b59
    Call-ID: Nzc3MzRiNzY0M2Q1NGRlYWU0ZDhlMmUwYzVlMTViZWQ.
    CSeq: 1 INVITE
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO
    Content-Type: application/sdp
    User-Agent: 3CXPhoneSystem 5.0.3790.0
    Content-Length: 427
     
  2. archie

    archie Well-Known Member
    3CX Support

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    3CX PhoneSystem is not a SIP proxy. That is why proxy rules are not unconditionally applicable. But we're considering implementation of paging and intercom, so this ability will appear quite soon.
     
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  3. dweidig

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    Thanks. Paging and intercom support would be great. If paging is implemented like in Asterisk, that would be great also. I found 3CX very easy to setup and most of my customers are Windows users, so would I really like to use 3CX for this application.
     
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